Similar to Sn,Pb located at the same group(IVA)in the periodic table of elements,can also catalyze propane dehydrogenation to propene,while a fast deactivation can be observed.To enhance the stability,the traditional ...Similar to Sn,Pb located at the same group(IVA)in the periodic table of elements,can also catalyze propane dehydrogenation to propene,while a fast deactivation can be observed.To enhance the stability,the traditional carrier Al_(2)O_(3)with a small amount,was introduced into Pb/SiO_(2)catalyst in this study.It has been proved that Al_(2)O_(3)can inhibit the reduction of PbO,and weaken the agglomeration and loss of Pb species due to its enhanced interaction with Pb species.As a result,3Al15Pb/SiO_(2)catalyst exhibits a much higher stability up to more than 150 h.In addition,a simple schematic diagram of the change of surface species on the catalyst surface after Al_(2)O_(3)addition was also proposed.展开更多
基金supported by the National Natural Science Foundation of China(Grant No.22178390)the Natural Science Foundation of Shandong Province of China(Grant No.ZR2022MB023)the Focus on Research and Development Plan in Shandong Province(Grant No.2021ZLGX06)。
文摘Similar to Sn,Pb located at the same group(IVA)in the periodic table of elements,can also catalyze propane dehydrogenation to propene,while a fast deactivation can be observed.To enhance the stability,the traditional carrier Al_(2)O_(3)with a small amount,was introduced into Pb/SiO_(2)catalyst in this study.It has been proved that Al_(2)O_(3)can inhibit the reduction of PbO,and weaken the agglomeration and loss of Pb species due to its enhanced interaction with Pb species.As a result,3Al15Pb/SiO_(2)catalyst exhibits a much higher stability up to more than 150 h.In addition,a simple schematic diagram of the change of surface species on the catalyst surface after Al_(2)O_(3)addition was also proposed.
